I still use and mostly like FF too, but just look at their marketshare (and their own developer confidence, with Servo and Brave). Chrome destroyed them and I think it was mostly on technical merit, from a general user's perspective.

Honestly Google did everything they could to help FF (to the tune of $400M/year) and Mozilla squandered it. Really sad.

Edit: Before this comment gets downvoted I want to try to explain it. When Brendan Eich wanted to make a new browser, he could've based it on Firefox/Gecko, which he had decades of experience with, but he didn't. What a vote of no confidence. Then Rust was invented because they thought creating a new language was the best way to catch up to Chrome's security. Even if you like Rust, you have to admit that was a bad decision for Mozilla's management.

Mozilla was the good guys, but being the good guys doesn't automatically mean you'll win. Too much wishful thinking can easily cloud one's judgment.

I'm only writing this because I care.